Thread-eye for loom-shuttles.



R- O. ALLEN.

THREAD EYE FOR LOOM SHUTTLES. APPLICATION FILED MAY I4. 1915.

1,199,331. PatentedSept. 26,1916.

wwkw ATTORNEY UNITED STATES PATENT onnron.

ROBERT OTIS ALLEN, OF PROVIDENCE, RHODE ISLAND, ASSIGNOR TO SHAMBOW SHUTTLE COMPANY, OF WOONSOCKET, RHODE ISLAND, A CORPORATION OF RHODE ISLAND.

THREAD-EYE FOR LOOM-SHUTTLES.

Specification of Letters Patent.

Patented Sept. 26, 1916.

Application filed May 14, 1915. Serial No. 28,193.

To all whom it may concern Be it known that I, ROBERT O. ALLEN, a citizen of the United States, and resident of Providence, county of Providence, State of Rhode Island, have invented an Improvement in Thread-Eyes for Loom-Shuttles, of which the following description, in connection with the accompanying drawing, is a specification, like characters on the drawing representing like parts.

This invention relates particularly to improvements in thread eyes for loom shuttles but is adapted for use in other apparatus in which thread or yarn is directed in its movement.

The usual thread eye is a metallic bushing placed within the shuttle eye and lining the walls thereof to prevent the thread passing from the shuttle from wearing grooves in the wall of the eye. These metallic thread eyes however in use become worn and slotted by the thread so that they abrade and frequently break the thread. In some instances the thread eyes are enameled to provide a smooth and hard thread guiding surface, but the enamel is often broken when the thread eye is forced into the wood. At other times the contraction of the wood through changes in temperature and humidity checks and cracks the enamel in such a manner that it cuts or breaks the thread which is being drawn through the eye. Other thread eyes of porcelain .and like materials have been used but in such case the thread eye is frequently broken when inserted into the shuttle eye and in other instances the contraction of the wood cracks or breaks the porcelain and destroys the thread eye.

One of the objects of the present invention is to provide a thread eye having a smooth chamber through which the thread is passed, preferably of porcelain or other vitreous material, which is held in proper position within the thread eye and is surrounded by a protective covering preferably of metal which can expand and contract slightly Iwithout injuring the inclosed guiding mem- Another object of the invention is to provide a guiding member of the character above stated which may be readily removed from the inclosing protecting member or shell and another substituted in case of breakage.

Another obje t o the in ntion resides in.

securing a guiding member of the character above described within the inclosing shell in such a manner that it is prevented from rotative movement when in place in the shuttle but retained therein by a longitudinally yielding medium which will permit the guiding member to be removed from its retaining mechanism and withdrawn from the shuttle without the necessity of removing the inclosing shell so that the latter may be permanently fixed within the shuttle.

Another feature of the invention comprises the construction of a thread-eye of the character above described with suitable slots in the guiding member and the inclosing member for the introduction of the thread, the wall inclosi g member being cut away or beveled to give a proper clearance for the introduction of the thread into the eye.

The drawings illustrate the preferred embodiments of the invention disclosed herein.

In the drawings: Figure 1 is a plan view of a portion of a shuttle inclosing a thread eye made-in accordance with the present invention, Fig. 2 is a transverse sectional view on the line 2+2 Fig. 1, Fig. 3 is a detail view of one form of thread eye showing the thread guiding member partially inserted in the inclosing member or shell, Fig. 4 is a longitudinal sectional view of the shell showing the thread guiding member in elevation in operative position in the shell, Fig. 5 is a detail view in perspective of the thread guiding member, Fig. 6 is a longitudinal sectional view inclosing member or shell, Fig. 7 1s a transverse view of the shell and thread eye showing particularly the position of the slots in the thread eye when positioned in the shuttle.

As illustrated inFig. 1 the shuttle 1 is provided with the usual chamber 2 to receive the bobbin or cop, not shown, a slot 3 leading from said chamber to the threading chamber 4 which connects in the usual manner with a transverse shuttle eye 5, a vertical slot or kerf 6 leads from the threading chamber 4 to a horizontal slot 6 to form a beak 7 about which the thread is drawn into the shuttle eye in the usual manner. The shuttle body 1 desirably is provided with a ledge 8 which extends above the plane of the bottom of the thread eye 5 and serves to retain the thread within the th ad guide inv a of a modified form of manner which will hereafter be described. The construction thus described is similar to that described in Patent No. 84:9,213 granted to Pierre P. Daudelin, April 2, 1907, assignor to John Shambow.

The improved thread-eye as illustrated in the drawings comprises a hollow, preferably cylindrical thread guiding member 9 formed of a vitreous material such as porcelain, glass or the like having a latorally extending boss 10, preferably provided with an aperture 11 through which the thread may be introduced into the cylindrical chamber 13 of the thread guiding member. The thread guiding member is provided with a substantially longitudinal bottom slot 12 which is provided with a lateral branch or ofiset 1a connecting with the aperture 11 of the boss as is shown in detail in Fig. The fragile character of the thread guiding member is such that in order that it may be used successfully it should be inclosed in a suitable protecting member or shell. Preferred forms of such shells are illustrated in the drawing which as shown in Figs. 3 and 4 comprises a substantially cylindrical metallic member 15 preferably made of steel and bored longitudinally to provide a chamber 16 into which the thread guiding member 10 may be easily inserted but not clamped therein. The shell 15 is preferably provided with a longitudinal slot 17 having a laterally offset portion 18 forming with the longitudinal slot a bayonet slot adapted to receive the boss 10 of the thread guiding member. The end of the lateral slot desirably is en larged to cylindrical form as shown in Fig. 1 so that when the thread guiding member is positioned therein it will be held from rotative movement relatively to the shell.

The thread guiding member when inserted in the shell is retained preferably by a yielding member such as a helical spring 19, as illustrated in Fig. 4. A rubber block 19 is illustrated in Fig. 6 or other suitable resilient material. The yielding member 19 if in the form of a spring may be seated in the end of the chamber 16 and bear against the end of the thread guiding member as illustrated in Fig. i or the shell may be formed to receive a screw 20 as illustrated in Fig. 6. It will be understood that other means may be provided for holding the thread guiding member in the shell'within the meaning and scope. of my invention. The end of the thread eye may be provided with screw threads 21 adapted to engage the wood of the shuttle and to hold the shell firmly and permanently in position therein. The thread eye thus described is preferably so arranged in the shuttle that the slot 12 of the thread guiding member and the longitudinal slot 16 will be at the bottom of the in the bayonet slot thread eye, the longitudinal slot 16 being of sufficient width and its wall 23 so beveled as to provide the proper clearance to permit the thread to be introduced through the vertical slot 6 and the horizontal kerf leading to the shuttle eye.

In the use of this thread eye the protecting member or shell 15 may be screwed into the body of the shuttle in the usual manner and the thread guiding member thereafterintroduced through the open end of the shell, the boss first traveling along the longitudinal slot 17, then turning laterally along the offset portion 18 until it reaches the enlarged circular termination of said slot at which time it will be pressed by the spring 19 into engagement with the wall of the slot as illustrated in Fig. 1 so that it 7 will be retained firmly against rotative movement relative to the shell. The thread may be introduced in the usual manner by drawing the same from the cop through the slot 3 in the shuttle body and the threading chamber 4: into the downwardly extending slot 6 until it reaches the horizontal connecting slot. The thread is then drawn backward toward the body of the shuttle and carried along the horizontal slot and through the communicating slots 16 of the shell and 12 of the thread guiding member until the thread lies in the hollow chamber 13 of the thread guiding member. It is retained in the slot 12 by the ledge 8 of the shuttle body which overlies the slots 16 of the. shell and the slot 13 of the thread eye and thereby prevents the thread from ballooning into the slot through which it was introduced into the thread eye. The inclined slot 16 is so positioned relatively to theaperture 11 of the thread guide that the thread is prevented from ballooning into the slot 6 at the inner end of the thread eye. Of course additional means may be provided if desired for more positively preventing the thread from being thrown out of the inner end of the thread eye but ordinarily this will not be found necessary.

It is to be understood that the embodiments of the invention disclosed herein are illustrative merely and not restrictive and that my invention embraces broadly the production of a hollow thread guiding member having smooth surfaces formed of any material but preferably of a vitreous ma terial and inclosed in a protecting member or shell secured within the shuttle eye. It is also to be understood. that the thread guide disclosed herein in its protecting shell may be used in other relations than in the eye of a shuttle and that the following claims are to be construed as broadly covering such a thread guiding means within an inclosing shell and further, that it compre: hends broadly prov'ding means for detachably securing a thread guiding member of a member when the latter is the character above described within a protecting member or shell irrespective of the form, position, or location of the parts.

Having thus described my invention what I claim as new and desire to secure by Letters Patent, is:

1. A thread eye for loom shuttles comprising a hollow thread guiding member, an inclosing protecting and strengthening member, means for detachably securing the latter in the shuttle body, and interlocking means on said members, adapted to permit the thread guiding member to be detachably inserted in the outer end of the protecting rigidly fixed in the shuttle body.

1 with a bayonet slot extending 2. A thread eye for loom shuttles comprising a slotted hollow cylindrical thread guiding member, a cylindrical inclosing, protecting and strengthening member having an exteriorly screw threaded portion and means for detachably securing the thread guiding member within said inclosing member.

3. A thread-eye for loom shuttles comprising a hollow vitreous thread guiding member, an inclosing metallic protecting member, means for detachably securing the latter in the shuttle body and interlocking means on said members for detachably securing the thread guiding member within the inclosing member, whereby the vitreous thread guiding member may be removed from the outer end of said inclosing member.

4. A thread-eye for loom shuttles comprising a hollow thread guiding member having an outwardly pro ecting boss and provided with a longitudinal slot, a metallic inclosing member having a cooperating longitudinal slot and a lateral recess connecting therewith adapted to receive the boss upon the thread guiding member and means for maintaining said boss in said recess.

5. A thread-eye for loom shuttles comprising a hollow cylindrical thread'guiding member of vitreous material having an apertured outwardly projecting boss and provided with a longitudinal slot having a lateral branch connecting with the aperture in said boss, a cylindrical metallic inclosing member having a bayonet slot adapted to receive said boss and resilient means for retaining the boss in the bayonet slot.

6. A thread-eye for loom shuttles comprising a hollow cylindrical vitreous thread guiding member having an apertured outwardly extending boss and provided with a longitudinal slot having a lateral branch connecting with the aperture in said boss, a cylindrical metallic inclosing shell having a screw threaded end portion, adapted to engage the wall of a shuttle eye, and provided from its opposite end to receive said boss, resilient means inclosed within the screw-threaded end of said shell adapted to bear upon the end of the thread guiding member and retain the boss in engagement with the bayonet slot. I

7. A thread-eye for loom shuttles comprising a hollow cylindrical thread guiding member having a cylindrical outwardly ex tending apertured boss and provided with a slot extending longitudinally of said guiding member and provided with a lateral branch connecting with said boss, 21- cylindrical metallic inclosing shell having a screw threaded end portion adapted to engage the wall of the shuttle eye and provided with a longitudinally extending slot laterally offset to form a bayonet slot, said slot being adapted to receive the boss of said thread guiding member and so constructed that when the thread eye is in position therein the rear wall of the slots in the thread guide and in the inclosing member will be in substantially the same plane, the offset wall of the slot of the'inclosing shell being beveled into a plane substantially tangential to the circumference of the thread guiding member and resilient means seated within the end of the shell and bearing upon the end of the thread guiding member to retain the latter securely in position within said shell.

8. A loom shuttle having a substantially horizontal shuttle eye and connecting downwardly extending and horizontal slots leading to said shuttle eye and connecting therewith at the bottom of the shuttle eye, a thread-eye located in said-shuttle eye consisting of a cylindrical vitreous thread guiding member having an apertured outwardly projecting boss and provided with a bottom slot having a lateral branch leading to the aperture in said boss, an inclosing metallic shell screw threaded at one end into the shuttle and having a bottom slot leading from its opposite end and having a lateral offset forming a bayonet joint adapted to receive a boss in said thread guiding member and a spring seated within the screw threaded end of the shell and bearing upon the end of the thread engaging member to retain the boss within the bayonet slot in the shell, the forward wall of the slot in the shell being beveled to provide a clearance for the thread when introduced into the thread eye and means located at the delivery end of the thread eye to prevent the thread from being thrown into the slot during the flight of the shuttleto and fro in the loom.

9. In a hand threading loom shuttle comprising an integral chambered body portion apertured transversely to form a thread delivery eye and slotted to providea thread passage leading to said eye, a hollow cylin drical vitreous thread eye detachably secured ithin and axially removable from an inclosing casing seated in said delivery eye, said thread eye and its protecting casing having registering slots communicating with the threading slot in the shuttle body.

10. In a hand threading loom shuttle comprising an integral chambered body portion apertured transversely to form a thread delivery eye and slotted to provide a thread Copies of this patent may be obtained for passage leading to said eye, a hollow cylindrical vitreous thread guiding member detachably secured by a bayonet joint connection With n an inclosmg casing having reg1s- ROBERT OTIS ALLEN.

Washington, D. 0 

